Improvement in puddling-furnaces



E. LLOYD.

Paddling-Furnaces.

No. 135,650, 1 Patenwd Feb'. 11, 18173.

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UNITED STATES PATENT GEEIGE.

EVAN LLOYD, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN PUDDLlNG-FURNACES.

Specification forming part of Letters Patent No. 135,650, dated February11, 1873.

To all whom it may concern:

Be it known that I, EVAN LLOYD, of Pittsburg, in the county of Alleghenyand State of Pennsylvania, have invented an Improvement in Furnaces forBoiling, Heating, and Puddling Iron; and I do hereby declare thatthe'following is a full, clear, and exact descriptionthereof, referencebeing had to the accompanying drawing making part ot' thisspeciiication, which is a section taken longitudinally and verticallythrough the center of my improved furnace.

This invention relates to an improvement on furnaces for boiling,heating, and puddling iron, `the object of which is to prevent thehearth-plate and the base of the chimney or stack from rapidly burningout, and also to greatly facilitate combustion ofthe infiammable gasesin the furnace by supplying air thereto, thereby utilizing fuel andpreventing largely the escape. of smoke, as' will be hereinafterexplained.

The following description of my improvement will enable others skilledin the art to understand it.

In the accompanying drawing, A represents the nre-chamber, which issupplied with fuel through a feed-opening, b. E represents the ash-pitbelow the grate-bars of the lire-chamber A, and E represents an openingleading into the ash-pit, which opening will in practice be providedwith a door, to which a register may be applied for regulating theadmission of air. B represents the hearth, and c its bottom plate, whichis between two transverse bridges, a d, a being the dre-bridge and d theflue-bridge. Beneath the hearth-plate c will be to violently turn backthe flames rushing through the ue h, and greatly retard the escape ofinflammable gases; at thesame time the air, which is more or less heatedin its passage through the conduit G, Will mix withV the gases and allowthem to be consumed in the furnace. The air which is conducted throughthe conduit Gr Will absorb a large amount of heat from the hearth-platecand `the plate e, and thus, by keeping down their temperature, preventthem from rapidly burning out, and as the air impinges on the walls ofthe chilnney at its base these walls will be protected from the intenseheat to which they are subjected in other puddling-furnaces.

In all other respects the furnace may be constructed and prepared A4forwork like puddling-furnaces of the well-known kind.

Having described my invention, whatI claim as new, and desire to secureby Letter-s Patent, is

The air-conduit G, arranged beneath the hearth and communicating withthe chimney or stack at the base thereof, for the purposes and in themanner substantially as described.

EVAN LLOYD.

Witnesses:

J. N. CAMPBELL, EDM. F. BROWN.

